Nadeesha Ramanayake (born 25 December 1994) is a Sri Lankan track and field athlete who competes mainly in the 400 metres sprint.

At the 2019 Asian Athletics Championships, Ramanayake competed in the women's 4x400-meter race that broke the national record.

She qualified for the 2023 Asian Championship and surpassed Menaka Wickramasinghe to become the third fastest woman in Sri Lankan history in the 400m.

Ramanayake also became the eighth Sri Lankan to win an Asian Championships individual gold medal.

[5] At the 47th Sri Lankan National Sports Games held in August 2023, she won gold for both 200m and 400m and also bagged the best women athlete award.